CN110940030A - Operation control method and system of air conditioner and air conditioner - Google Patents
Operation control method and system of air conditioner and air conditioner Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000007613 environmental effect Effects 0.000 claims description 38
- 238000004378 air conditioning Methods 0.000 claims description 19
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- 230000008878 coupling Effects 0.000 abstract description 4
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- 238000010438 heat treatment Methods 0.000 description 16
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 14
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- 238000001816 cooling Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
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- 238000005057 refrigeration Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
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- 238000004422 calculation algorithm Methods 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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Abstract
The invention discloses an operation control method of an air conditioner. The operation control method of the air conditioner includes: determining the current operation capacity of the air conditioner; inquiring a system operation database according to the operation capacity to obtain operation parameters of each actuator of the air conditioner; and controlling the operation of each actuator of the air conditioner according to the operation parameters. The invention generates a control strategy to carry out coupling linkage control on actuators of the existing air conditioner, and solves the problem that the existing air conditioner control strategy is single in fixation. Correspondingly, the invention also provides an operation control system of the air conditioner and the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioner operation control, in particular to an air conditioner operation control method and system and an air conditioner.
Background
With the improvement of living standard, the quality requirement of people on living environment is higher and higher. The air conditioner is used as an important device for indoor temperature and humidity adjustment and has become a necessity in the life of people. At present, the air conditioner adopts a traditional control strategy, actuators (such as a compressor, a fan, an electronic expansion valve and the like) are independently controlled, the logic is relatively fixed and simple, and the air conditioner is difficult to achieve the optimal operation state. For example, when the room temperature reaches the set temperature, the air conditioner may not be in the optimal low power consumption operation state.
Disclosure of Invention
In order to solve at least one of the above problems, the present invention provides an operation control method for an air conditioner, which solves the problem that the control strategy of the existing air conditioner is fixed singly.
Correspondingly, the invention also provides an operation control system of the air conditioner and the air conditioner.
In a first aspect, the present invention provides an operation control method of an air conditioner.
The operation control method of the air conditioner includes:
determining the current operation capacity of the air conditioner;
inquiring a system operation database according to the operation capacity to obtain operation parameters of each actuator of the air conditioner;
and controlling the operation of each actuator of the air conditioner according to the operation parameters.
Specifically, the method further comprises the following steps:
acquiring the running time of an air conditioner;
judging whether the running time reaches a preset time threshold value or not;
if not, determining the operation capacity of the air conditioner according to the first mode of the air conditioner;
and if so, determining the operation capacity of the air conditioner according to the second mode of the air conditioner.
Specifically, the step of determining the operation capability of the air conditioner according to the first mode of the air conditioner specifically includes:
acquiring the ambient temperature of an indoor unit of an air conditioner and the set temperature of a user;
and determining the operation capacity of the air conditioner according to the environment temperature and the set temperature.
Specifically, the step of determining the operation capability of the air conditioner according to the second mode of the air conditioner specifically includes:
acquiring the ambient temperature of an indoor unit of an air conditioner and the set temperature of a user;
judging whether the temperature difference between the environment temperature and the set temperature is smaller than a preset temperature threshold value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
Specifically, before the step of determining the operation capability of the air conditioner according to the environmental load value corresponding to the set temperature, the method further includes:
when the temperature difference is smaller than the temperature threshold, acquiring the stable time of the air conditioner running under the condition;
judging whether the stabilization time meets a preset time value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
Specifically, the step of determining the operation capability of the air conditioner according to the environmental load value corresponding to the set temperature specifically includes:
acquiring room parameters of the current air conditioner operation environment;
and inputting the room parameters and the set temperature into a preset building simulation model to obtain the environmental load value of the current air conditioner in the operating environment.
Specifically, the method further comprises the following steps:
pre-establishing the system operation database;
the step of establishing the system operation database specifically includes:
establishing a system simulation model or a neural network model;
acquiring environmental working condition parameters, an air conditioning mode and a set temperature of an air conditioner;
and training the system simulation model or the neural network model by using the environmental working condition parameters, the air-conditioning mode and the set temperature to obtain the system operation database.
Specifically, the step of querying a system operation database according to the operation capability to obtain the operation parameters of each actuator of the air conditioner specifically includes:
inquiring the system operation database according to the operation capacity, and determining the operation scheme with the minimum operation power corresponding to the current operation capacity;
and acquiring the operation parameters of each actuator of the air conditioner corresponding to the operation scheme with the minimum operation power.
Specifically, the method further comprises the following steps:
calling a temperature sensing device and a humidity detection device which are arranged on an indoor unit and an outdoor unit of the air conditioner to obtain environmental working condition parameters; wherein the environmental condition parameters include: indoor dry bulb temperature, indoor humidity, outdoor dry bulb temperature, outdoor humidity parameters.
Specifically, the step of determining the current operation capacity of the air conditioner includes:
acquiring the air outlet temperature Tout and the moisture content Dout of an air outlet of the air conditioner, the air inlet temperature Tin and the moisture content Din of an air inlet of the air conditioner and the rotating speed of a fan;
respectively determining the air volume AF of the air conditioner internal unit and the operation capacity Q according to the air outlet temperature Tout, the moisture content Dout, the air inlet temperature Tin, the moisture content Din and the rotating speed of a fan; wherein,
AF＝a·e(b·N+c)·(d·N3+f·N2+ g.n + h) · (i.dout + k); (a, b, c, d, f, g, h, i, k are fitting constants);
Q＝k·ln(l·Tin2+ m.tin + n). AF (Hin-Hout); wherein Tin is the temperature of the inlet air, k, l, m and n are fitting coefficients, and Hin and Hout are calculated according to the inlet and outlet air temperatures Tin and Tout and the inlet and outlet air moisture contents Din and Dout.
Specifically, the step of determining the current operation capacity of the air conditioner includes:
acquiring the operating frequency F of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan;
and inquiring the system operation database according to the operation frequency F, the opening P and the rotating speed N to determine the current operation capacity of the air conditioner.
Specifically, the operation parameters include an operation frequency F of the air-conditioning compressor, an opening P of the electronic expansion valve, and a rotation speed N of the fan.
Specifically, the step of controlling the operation of each actuator of the air conditioner according to the operation parameters specifically includes:
controlling the operation frequency of the air-conditioning compressor according to the operation frequency F;
controlling the opening degree of the electronic expansion valve according to the opening degree P;
and controlling the rotating speed of the fan according to the rotating speed N.
In a second aspect, the present invention provides an operation control system of an air conditioner.
The operation control system of the air conditioner includes:
the determining module is used for determining the current operation capacity of the air conditioner;
the query module is used for querying a system operation database according to the operation capacity to obtain the operation parameters of each actuator of the air conditioner;
and the control module is used for controlling the operation of each actuator of the air conditioner according to the operation parameters.
In a third aspect, the present invention provides an air conditioner. The air conditioner is used for executing the steps of the operation control method of the air conditioner.
Compared with the prior art, the scheme of the invention has the following advantages:
1. in the invention, the current operation capacity of the air conditioner is determined; inquiring a system operation database according to the operation capacity to obtain operation parameters of each actuator of the air conditioner; and controlling the operation of each actuator of the air conditioner according to the operation parameters. The invention generates a control strategy to carry out coupling linkage control on actuators of the existing air conditioner, and solves the problem that the existing air conditioner control strategy is single in fixation.
2. In the invention, the system operation database is inquired according to the operation capacity, and the operation scheme with the minimum operation power corresponding to the current operation capacity is determined; and acquiring the operation parameters of each actuator of the air conditioner corresponding to the operation scheme with the minimum operation power. The invention can not give full play to the air conditioning capacity, solves the problem that the current air conditioner operates in a stable operation state without low power consumption, and realizes the accurate control of energy and energy-saving operation when the air conditioning system operates.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating an embodiment of an operation control method of an air conditioner according to the present invention;
fig. 2 is a schematic flow chart illustrating another embodiment of an operation control method of an air conditioner according to the present invention;
FIG. 3 is a schematic diagram illustrating an embodiment of an operation control system of an air conditioner according to the present invention;
fig. 4 is a schematic structural diagram illustrating another embodiment of an operation control system of an air conditioner according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In some of the flows described in the present specification and claims and in the above figures, a number of operations are included that occur in a particular order, but it should be clearly understood that these operations may be performed out of order or in parallel as they occur herein, with the order of the operations being indicated as 101, 102, etc. merely to distinguish between the various operations, and the order of the operations by themselves does not represent any order of performance. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flow of steps of an embodiment of an operation control method of an air conditioner according to the present invention is shown.
The operation control method of the air conditioner includes step S101, step S102, and step S103. Wherein,
s101, determining the current operation capacity of the air conditioner;
s102, inquiring a system operation database according to the operation capacity to obtain operation parameters of each actuator of the air conditioner;
and S103, controlling the operation of each actuator of the air conditioner according to the operation parameters.
At present, the traditional air conditioner adjusts the operation capacity of the air conditioner, namely the output capacity of the air conditioner by controlling actuators such as the rotating speed of a compressor, the rotating speed of a fan, an electronic expansion valve and the like, and the operation capacity of the air conditioner is difficult to control to be matched with the space load of the air conditioner, so that the waste of the operation capacity of the air conditioner is easily caused.
According to the air conditioner operation capacity, the system operation database which is established in advance is used for obtaining the operation parameters of each actuator of the air conditioner corresponding to the system operation database, and coupling linkage control of the actuators of the existing air conditioner is realized, so that the operation capacity of the air conditioner can be easily controlled to be matched with the space load of the air conditioner, the operation capacity of the air conditioner is better controlled, and the energy consumption is saved.
In a specific embodiment of the present invention, the operation parameters include an operation frequency F of an air conditioner compressor, an opening P of an electronic expansion valve, and a rotation speed N of a fan.
Further, the step of controlling the operation of each actuator of the air conditioner according to the operation parameters specifically includes:
controlling the operation frequency of the air-conditioning compressor according to the operation frequency F;
controlling the opening degree of the electronic expansion valve according to the opening degree P;
and controlling the rotating speed of the fan according to the rotating speed N.
Referring to fig. 2, a flow of steps of another embodiment of an operation control method of an air conditioner according to the present invention is shown.
In this embodiment, the operation control method of the air conditioner further includes step S104. Wherein, step S104 is as follows:
acquiring the running time of an air conditioner;
judging whether the running time reaches a preset time threshold value or not;
if not, determining the operation capacity of the air conditioner according to the first mode of the air conditioner;
and if so, determining the operation capacity of the air conditioner according to the second mode of the air conditioner.
Because the temperature difference between the temperature of the operating environment and the set temperature of the user (it can be understood that the set temperature is the operating temperature of the air conditioner set by the user through a remote controller or the like) is generally relatively large when the air conditioner starts to operate; after the operation is performed for a period of time and the temperature is stabilized, the temperature difference between the temperature of the operation environment and the set temperature of the user is generally stabilized at a certain value. The requirements of the length of the operation time on the operation capacity are different, and in order to ensure that the operation capacity of the air conditioner is more reasonable, the first mode and the second mode of the air conditioner are divided according to the operation time of the air conditioner after the air conditioner is started. And under different modes, the determination scheme of the operation capacity of the air conditioner is different. Wherein the division of the first mode and the second mode is used to determine the operation capability of the air conditioner.
For example, when the operation time of the air conditioner is less than 5 minutes with the time threshold value of 5 minutes as a limit, the actual operation capability of the air conditioner is determined according to the first mode of the air conditioner. When the operation time of the air conditioner is more than 5 minutes, the actual operation capability of the air conditioner is determined according to the second mode of the air conditioner.
In a specific embodiment of the present invention, the step of determining the operation capability of the air conditioner according to the first mode of the air conditioner specifically includes:
acquiring the ambient temperature of an indoor unit of an air conditioner and the set temperature of a user;
and determining the operation capacity of the air conditioner according to the environment temperature and the set temperature.
When the air conditioner starts to operate, the parameters such as the internal and external temperature, the humidity and the like of the current operating space of the air conditioner are detected through the sensors and the like on the indoor unit and the outdoor unit, and the set temperature, the air conditioner mode and the room parameters of a user are obtained. The air conditioning mode includes a cooling mode, a heating mode, a dehumidifying mode, a sleep mode, and other functional modes, but is not limited to these modes.
The air conditioner is firstly started according to the indoor environment temperature TInner ringAnd a set temperature T of a userSet temperatureDetermining a start-up initialization of an air conditionerLoad (running capacity) Q0'. In one possible embodiment, for example, as follows:
wherein Qmax is the maximum operation capacity of the current air conditioner, and Qmin is the minimum operation capacity of the current air conditioner.
Take the refrigeration mode as an example; Δ T ═ TInner ring-TSet temperatureIf the temperature is higher than 6 ℃, the cooling/heating load is heavier, and the initial operation capacity Q0' of the air conditioner is operated according to the maximum Qmax of the air conditioner.
If T is equal to TInner ring-TSet temperature< 2 ℃ and TInner ring-TSet temperatureIf the temperature is higher than 0.5 ℃, the cooling/heating load is lighter, and the initial operation capacity Q0' of the air conditioner starting is operated according to the minimum Qmin of the air conditioner.
If T is equal to TInner ring-TSet temperatureIf the temperature is less than 0.5 ℃, the air conditioner only starts the air supply function and the compressor is not started, which indicates that the refrigerating and heating load requirements are basically absent at the moment.
The heating mode adopts delta T ═ TSet temperature-TInner ringAnd calculating in the same way as the refrigeration mode.
The above method only provides one possible determination mode of the air conditioner operation capacity in the cooling mode and the heating mode, and the determination mode of the corresponding operation capacity can be adjusted according to actual requirements. For other air conditioning modes, reference may be made to the determination of the capacity in the cooling mode and the heating mode.
Because of the individual control among the actuators of the air conditioner, it is difficult to ensure that the air conditioner is in an optimal operation state. The same system output capacity, that is, the same operation capacity of the air conditioner exists, but the rotation speed of the compressor, the opening degree of the electronic expansion valve, and the rotation speed of the fan are not necessarily the same, and the power consumption is also different. It is difficult for the air conditioner to achieve an optimal low power consumption operation state.
Further, the step of querying a system operation database according to the operation capability to obtain the operation parameters of each actuator of the air conditioner specifically includes:
inquiring the system operation database according to the operation capacity, and determining the operation scheme with the minimum operation power corresponding to the current operation capacity;
and acquiring the operation parameters of each actuator of the air conditioner corresponding to the operation scheme with the minimum operation power.
In this embodiment, after the operation capability of the air conditioner is determined according to the first mode, input parameters such as the operation frequency F ' of the compressor, the opening P ' of the electronic expansion valve, the rotation speed N ' of the fan and the like corresponding to the same capability Q ' in the operation database of the air conditioner system are called, then operation powers of control strategies corresponding to different frequencies F ', the opening P ' of the expansion valve and the rotation speed N ' of the fan are compared, the smaller operation power is the optimal control strategy, and the air conditioner executes the control strategy as the initial startup control strategy.
In the process of rapid temperature rise and temperature drop before the air conditioner starts to operate, the air conditioner capacity Q ' is gradually reduced from the initial operation capacity Q0 ', and the change of the capacity Q ' is according to the indoor environment temperature change rate delta TInner ringΔ T and | Δ T | ═ TInner ring-TSet temperatureAnd | adjusting in a fuzzy control or PID control mode. The operation capacity Qn ' of the air conditioner is changed once every delta t time, and input parameters such as the operation frequency Fn ' of the compressor, the opening degree Pn ' of the electronic expansion valve, the rotating speed Nn ' of the fan and the like corresponding to the same size of the plurality of groups of operation capacities Qn ' in the system operation database of the air conditioner are called again every time of change, and a control strategy with low operation power is selected for execution. Therefore, the air conditioner can realize the effect of rapid temperature rise and temperature drop according to the optimal energy-saving control strategy.
In another specific embodiment of the present invention, the step of determining the operation capability of the air conditioner according to the second mode of the air conditioner specifically includes:
acquiring the ambient temperature of an indoor unit of an air conditioner and the set temperature of a user;
judging whether the temperature difference between the environment temperature and the set temperature is smaller than a preset temperature threshold value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
Specifically, before the step of determining the operation capability of the air conditioner according to the environmental load value corresponding to the set temperature, the method further includes:
when the temperature difference is smaller than the temperature threshold, acquiring the stable time of the air conditioner running under the condition;
judging whether the stabilization time meets a preset time value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
In this embodiment, the operating environment of the air conditioner is usually a closed or semi-closed space, and the space is taken as a room as an example.
In one possible embodiment, the operating capacity of the air conditioner is determined according to the second mode when the operating time of the air conditioner exceeds a certain time threshold.
Meanwhile, in a preferred embodiment, when the operation time of the air conditioner exceeds a certain time threshold, when the room temperature is substantially close to the set temperature, for example, when the temperature difference | Δ T | < 0.5 ℃, after the stable operation time is 5min, the current operation capability of the air conditioner may be determined according to the second mode of the air conditioner. The second mode may also be termed a capability optimization control mode. The temperature threshold and the time value can be adjusted correspondingly according to actual requirements.
Meanwhile, in the invention, a building simulation model is pre-established for calculating the environmental load value of the current operating environment of the air conditioner.
Specifically, the determining the operation capability of the air conditioner according to the environmental load value corresponding to the set temperature specifically includes:
acquiring room parameters of the current air conditioner operation environment;
and inputting the room parameters and the set temperature into a preset building simulation model to obtain the environmental load value of the current air conditioner in the operating environment.
When the air conditioner enters the second mode, the building simulation model starts to calculate the environmental load value Q of the room: the building simulation calculates the room parameters input and stored by a user before starting up and use, acquires the current indoor and outdoor temperature parameters and humidity parameters, and calculates the room temperature from the room environmental load value Q required for maintaining the room at the set temperature according to the room wall temperature and the heat source condition in the room. In the operation process of the air conditioner, the environmental load value Q of the room is continuously reduced along with the temperature change of the room and the temperature change of the wall.
The room parameters include room size (length/width/height), wall thickness, wall material, number and size of indoor windows, and other information. The parameter information can be input by a user through equipment such as app and a remote controller for the first time, and can be autonomously detected through intelligent equipment such as a 3D camera and an infrared probe.
The temperature of the wall and the temperature of a heat source (such as lamps, human bodies and other electric appliances and other heating objects) can be obtained through the infrared imaging equipment and calculated.
When the air conditioner is in the first mode and the air conditioner is in the second mode, the control strategy with the minimum operation power is also preferably used for controlling the operation of each actuator of the air conditioner.
When the air conditioner is in the second mode, the air conditioner capacity Q1' and the environmental load Q of the room are judged: if Q1 ' ≠ Q, at this time, the air-conditioning control strategy (parameters such as the operating frequency F1 ' of the compressor, the opening degree P1 ' of the electronic expansion valve, the rotation speed N1 ' of the fan and the like) is corrected so that Q1 ' is equal to Q. If Q1 'is Q, then a plurality of different control strategies with the same capacity Q' as the previous control strategy are called from the air conditioner operation database. Comparing the operating power Ws corresponding to different control strategies with the operating power W1 corresponding to the current control strategy, if Ws is larger than W1 ', re-calling the operating power of a new control strategy (the operating frequency of a small compressor, the opening degree of a large electronic expansion valve, the rotating speed of a small fan) to be compared with the current operating control strategy, iteratively calling n times until the operating strategy (the compressor frequency Fj, the opening degree Pj, the rotating speed Hj of the fan and the like) with the same Q1' and the minimum power Ws is called, and finally correcting the current control strategy. Therefore, the optimal control strategy with the same capacity but lower power can be continuously explored, and the air conditioner performance can be optimized.
And if the iteration is called for n times without smaller Ws, directly exiting the iteration to execute the current control strategy.
If the room temperature change (the difference change between the current operation environment temperature and the set operation temperature) in the second mode exceeds the set temperature difference, the second mode is stopped, the first mode is entered, and the operation capacity of the air conditioner is determined again.
In a specific embodiment of the present invention, specifically, the method further includes:
pre-establishing the system operation database;
the step of establishing the system operation database specifically includes:
establishing a system simulation model or a neural network model;
acquiring environmental working condition parameters, an air conditioning mode and a set temperature of an air conditioner;
and training the system simulation model or the neural network model by using the environmental working condition parameters, the air-conditioning mode and the set temperature to obtain the system operation database.
Specifically, the method further comprises the following steps:
calling a temperature sensing device and a humidity detection device which are arranged on an indoor unit and an outdoor unit of the air conditioner to obtain environmental working condition parameters; wherein the environmental condition parameters include: indoor dry bulb temperature, indoor humidity, outdoor dry bulb temperature, outdoor humidity parameters.
In the scheme of the invention, the system operation database is obtained by simulation calculation of a system simulation model or a neural network model.
Firstly, initial values such as environment condition parameters, air conditioner modes, room parameters and the like during the stable operation of the air conditioner need to be input into a system simulation model or a neural network model.
The environment working condition parameters comprise parameters such as indoor dry bulb temperature, indoor humidity, outdoor dry bulb temperature and outdoor humidity, and the parameters can be obtained by detecting temperature sensing bulbs on an indoor unit and an outdoor unit of an air conditioner, a humidity detection device and the like.
Secondly, in a possible implementation mode, the input and output results of the system simulation model are continuously trained and learned to form a neural network model, and the operation capacity Q 'and the operation power W' of the air conditioner at the moment can be rapidly predicted according to the input parameters (the operation frequency F of the compressor of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan). And a large number of input and output parameters are obtained through simulation calculation, and a system operation database of the air conditioner is established according to the input and output parameters.
In another possible embodiment, the system operation database may be understood as a neural network model itself, and the operation capacity Q 'and the operation power W' of the air conditioner are calculated in real time by directly using a neural network model algorithm instead of the air conditioner operation database.
In an embodiment of the present invention, the step of determining the current operation capability of the air conditioner includes:
acquiring the air outlet temperature Tout and the moisture content Dout of an air outlet of the air conditioner, the air inlet temperature Tin and the moisture content Din of an air inlet of the air conditioner and the rotating speed of a fan;
respectively determining the air volume AF of the air conditioner internal unit and the operation capacity Q according to the air outlet temperature Tout, the moisture content Dout, the air inlet temperature Tin, the moisture content Din and the rotating speed of a fan; wherein,
AF＝a·e(b·N+c)·(d·N3+f·N2+ g.n + h) · (i.dout + k); (a, b, c, d, f, g, h, i, k are fitting constants);
Q＝k·ln(l·Tin2+ m.tin + n). AF (Hin-Hout); wherein Tin is the temperature of the inlet air, k, l, m and n are fitting coefficients, and Hin and Hout are calculated according to the inlet and outlet air temperatures Tin and Tout and the inlet and outlet air moisture contents Din and Dout.
The air inlet temperature Tin can be detected by a temperature sensing bulb of the air inlet, the air outlet temperature Tout can be detected by a temperature sensor arranged at the air outlet, Din and Dout can be detected by humidity sensors arranged at the air inlet and the air outlet, and the actual output capacity Q of the current air conditioner in operation can be calculated in real time according to the relation between the air volume AF of the air conditioner internal unit and the rotating speed N.
In another embodiment of the present invention, specifically, the step of determining the current operation capability of the air conditioner includes:
acquiring the operating frequency F of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan;
and inquiring the system operation database according to the operation frequency F, the opening P and the rotating speed N to determine the current operation capacity of the air conditioner.
And after a system operation database is established, the system operation database comprises the corresponding relation between the operation frequency F of the air conditioner, the opening P of the electronic expansion valve, the rotating speed N of the fan and the operation capacity of the air conditioner. Therefore, after the operation frequency F of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan are known, the operation capacity of the air conditioner can be directly determined from a system operation database.
In a second aspect, the present invention provides an operation control system of an air conditioner.
Referring to fig. 3, a structure of an embodiment of an operation control system of an air conditioner in the present invention is disclosed.
The operation control system of the air conditioner comprises a determining module 101, an inquiring module 102 and a control module 103. Wherein:
a determining module 101, configured to determine a current operation capability of the air conditioner;
the query module 102 is used for querying a system operation database according to the operation capacity to obtain operation parameters of each actuator of the air conditioner;
and the control module 103 is used for controlling the operation of each actuator of the air conditioner according to the operation parameters.
At present, the traditional air conditioner adjusts the operation capacity of the air conditioner, namely the output capacity of the air conditioner by controlling actuators such as the rotating speed of a compressor, the rotating speed of a fan, an electronic expansion valve and the like, and the operation capacity of the air conditioner is difficult to control to be matched with the space load of the air conditioner, so that the waste of the operation capacity of the air conditioner is easily caused.
According to the air conditioner operation capacity, the system operation database which is established in advance is used for obtaining the operation parameters of each actuator of the air conditioner corresponding to the system operation database, and coupling linkage control of the actuators of the existing air conditioner is realized, so that the operation capacity of the air conditioner can be easily controlled to be matched with the space load of the air conditioner, the operation capacity of the air conditioner is better controlled, and the energy consumption is saved.
In a specific embodiment of the present invention, the operation parameters include an operation frequency F of an air conditioner compressor, an opening P of an electronic expansion valve, and a rotation speed N of a fan.
Further, the control module 103 specifically includes:
the first control unit is used for controlling the operation frequency of the air-conditioning compressor according to the operation frequency F;
the second control unit is used for controlling the opening degree of the electronic expansion valve according to the opening degree P;
and the third control unit is used for controlling the rotating speed of the fan according to the rotating speed N.
Referring to fig. 4, there is shown a structure of another embodiment of an operation control system of an air conditioner in the present invention.
In this embodiment, the operation control structure of the air conditioner further includes a determining module 104. The determining module 104 includes:
an acquisition unit for acquiring an operation time of the air conditioner;
the judging unit is used for judging whether the running time reaches a preset time threshold value;
if not, determining the operation capacity of the air conditioner according to the first mode of the air conditioner;
and if so, determining the operation capacity of the air conditioner according to the second mode of the air conditioner.
Because the temperature difference between the temperature of the operating environment and the set temperature of the user (it can be understood that the set temperature is the operating temperature of the air conditioner set by the user through a remote controller or the like) is generally relatively large when the air conditioner starts to operate; after the operation is performed for a period of time and the temperature is stabilized, the temperature difference between the temperature of the operation environment and the set temperature of the user is generally stabilized at a certain value. The requirements of the length of the operation time on the operation capacity are different, and in order to ensure that the operation capacity of the air conditioner is more reasonable, the first mode and the second mode of the air conditioner are divided according to the operation time of the air conditioner after the air conditioner is started. And under different modes, the determination scheme of the operation capacity of the air conditioner is different. Wherein the division of the first mode and the second mode is used to determine the operation capability of the air conditioner.
For example, when the operation time of the air conditioner is less than 5 minutes with the time threshold value of 5 minutes as a limit, the actual operation capability of the air conditioner is determined according to the first mode of the air conditioner. When the operation time of the air conditioner is more than 5 minutes, the actual operation capability of the air conditioner is determined according to the second mode of the air conditioner.
In a specific embodiment of the present invention, the determining module 104 includes:
the first determining unit is used for acquiring the ambient temperature of an indoor unit of the air conditioner and the set temperature of a user;
and determining the operation capacity of the air conditioner according to the environment temperature and the set temperature.
When the air conditioner starts to operate, the parameters such as the internal and external temperature, the humidity and the like of the current operating space of the air conditioner are detected through the sensors and the like on the indoor unit and the outdoor unit, and the set temperature, the air conditioner mode and the room parameters of a user are obtained. The air conditioning mode includes a cooling mode, a heating mode, a dehumidifying mode, a sleep mode, and other functional modes, but is not limited to these modes.
The air conditioner is firstly started according to the indoor environment temperature TInner ringAnd a set temperature T of a userSet temperatureThe start-up initial load (running capacity) Q0' of the air conditioner is determined. In one possible embodiment, for example, as follows:
wherein Qmax is the maximum operation capacity of the current air conditioner, and Qmin is the minimum operation capacity of the current air conditioner.
Take the refrigeration mode as an example; Δ T ═ TInner ring-TSet temperatureIf the temperature is higher than 6 ℃, the cooling/heating load is heavier, and the initial operation capacity Q0' of the air conditioner is operated according to the maximum Qmax of the air conditioner.
If T is equal to TInner ring-TSet temperature< 2 ℃ and TInner ring-TSet temperature0.5 ℃ C, to name a fewIf the cooling/heating load is light, the initial operation capacity Q0' of the air conditioner is operated according to the minimum Qmin of the air conditioner.
If T is equal to TInner ring-TSet temperatureIf the temperature is less than 0.5 ℃, the air conditioner only starts the air supply function and the compressor is not started, which indicates that the refrigerating and heating load requirements are basically absent at the moment.
The heating mode adopts delta T ═ TSet temperature-TInner ringAnd calculating in the same way as the refrigeration mode.
The above method only provides one possible determination mode of the air conditioner operation capacity in the cooling mode and the heating mode, and the determination mode of the corresponding operation capacity can be adjusted according to actual requirements. For other air conditioning modes, reference may be made to the determination of the capacity in the cooling mode and the heating mode.
Because of the individual control among the actuators of the air conditioner, it is difficult to ensure that the air conditioner is in an optimal operation state. The same system output capacity, that is, the same operation capacity of the air conditioner exists, but the rotation speed of the compressor, the opening degree of the electronic expansion valve, and the rotation speed of the fan are not necessarily the same, and the power consumption is also different. It is difficult for the air conditioner to achieve an optimal low power consumption operation state.
Further, the query module 102 specifically includes:
the query unit is used for querying the system operation database according to the operation capacity and determining the operation scheme with the minimum operation power corresponding to the current operation capacity;
and acquiring the operation parameters of each actuator of the air conditioner corresponding to the operation scheme with the minimum operation power.
In this embodiment, after the operation capability of the air conditioner is determined according to the first mode, input parameters such as the operation frequency F ' of the compressor, the opening P ' of the electronic expansion valve, the rotation speed N ' of the fan and the like corresponding to the same capability Q ' in the operation database of the air conditioner system are called, then operation powers of control strategies corresponding to different frequencies F ', the opening P ' of the expansion valve and the rotation speed N ' of the fan are compared, the smaller operation power is the optimal control strategy, and the air conditioner executes the control strategy as the initial startup control strategy.
In the process of rapid temperature rise and temperature drop before the air conditioner starts to operate, the air conditioner capacity Q ' is gradually reduced from the initial operation capacity Q0 ', and the change of the capacity Q ' is according to the indoor environment temperature change rate delta TInner ringΔ T and | Δ T | ═ TInner ring-TSet temperatureAnd | adjusting in a fuzzy control or PID control mode. The operation capacity Qn ' of the air conditioner is changed once every delta t time, and input parameters such as the operation frequency Fn ' of the compressor, the opening degree Pn ' of the electronic expansion valve, the rotating speed Nn ' of the fan and the like corresponding to the same size of the plurality of groups of operation capacities Qn ' in the system operation database of the air conditioner are called again every time of change, and a control strategy with low operation power is selected for execution. Therefore, the air conditioner can realize the effect of rapid temperature rise and temperature drop according to the optimal energy-saving control strategy.
In another specific embodiment of the present invention, the determining module 104 includes:
the second determining unit is used for acquiring the ambient temperature of the indoor unit of the air conditioner and the set temperature of the user;
judging whether the temperature difference between the environment temperature and the set temperature is smaller than a preset temperature threshold value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
Specifically, before the step of determining the operation capability of the air conditioner according to the environmental load value corresponding to the set temperature, the method further includes:
when the temperature difference is smaller than the temperature threshold, acquiring the stable time of the air conditioner running under the condition;
judging whether the stabilization time meets a preset time value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
In this embodiment, the operating environment of the air conditioner is usually a closed or semi-closed space, and the space is taken as a room as an example.
In one possible embodiment, the operating capacity of the air conditioner is determined according to the second mode when the operating time of the air conditioner exceeds a certain time threshold.
Meanwhile, in a preferred embodiment, when the operation time of the air conditioner exceeds a certain time threshold, when the room temperature is substantially close to the set temperature, for example, when the temperature difference | Δ T | < 0.5 ℃, after the stable operation time is 5min, the current operation capability of the air conditioner may be determined according to the second mode of the air conditioner. The second mode may also be termed a capability optimization control mode. The temperature threshold and the time value can be adjusted correspondingly according to actual requirements.
Meanwhile, in the invention, a building simulation model is pre-established for calculating the environmental load value of the current operating environment of the air conditioner.
Specifically, the determining the operation capability of the air conditioner according to the environmental load value corresponding to the set temperature specifically includes:
acquiring room parameters of the current air conditioner operation environment;
and inputting the room parameters and the set temperature into a preset building simulation model to obtain the environmental load value of the current air conditioner in the operating environment.
When the air conditioner enters the second mode, the building simulation model starts to calculate the environmental load value Q of the room: the building simulation calculates the room parameters input and stored by a user before starting up and use, acquires the current indoor and outdoor temperature parameters and humidity parameters, and calculates the room temperature from the room environmental load value Q required for maintaining the room at the set temperature according to the room wall temperature and the heat source condition in the room. In the operation process of the air conditioner, the environmental load value Q of the room is continuously reduced along with the temperature change of the room and the temperature change of the wall.
The room parameters include room size (length/width/height), wall thickness, wall material, number and size of indoor windows, and other information. The parameter information can be input by a user through equipment such as app and a remote controller for the first time, and can be autonomously detected through intelligent equipment such as a 3D camera and an infrared probe.
The temperature of the wall and the temperature of a heat source (such as lamps, human bodies and other electric appliances and other heating objects) can be obtained through the infrared imaging equipment and calculated.
When the air conditioner is in the first mode and the air conditioner is in the second mode, the control strategy with the minimum operation power is also preferably used for controlling the operation of each actuator of the air conditioner.
When the air conditioner is in the second mode, the air conditioner capacity Q1' and the environmental load Q of the room are judged: if Q1 ' ≠ Q, at this time, the air-conditioning control strategy (parameters such as the operating frequency F1 ' of the compressor, the opening degree P1 ' of the electronic expansion valve, the rotation speed N1 ' of the fan and the like) is corrected so that Q1 ' is equal to Q. If Q1 'is Q, then a plurality of different control strategies with the same capacity Q' as the previous control strategy are called from the air conditioner operation database. Comparing the operating power Ws corresponding to different control strategies with the operating power W1 corresponding to the current control strategy, if Ws is larger than W1 ', re-calling the operating power of a new control strategy (the operating frequency of a small compressor, the opening degree of a large electronic expansion valve, the rotating speed of a small fan) to be compared with the current operating control strategy, iteratively calling n times until the operating strategy (the compressor frequency Fj, the opening degree Pj, the rotating speed Hj of the fan and the like) with the same Q1' and the minimum power Ws is called, and finally correcting the current control strategy. Therefore, the optimal control strategy with the same capacity but lower power can be continuously explored, and the air conditioner performance can be optimized.
And if the iteration is called for n times without smaller Ws, directly exiting the iteration to execute the current control strategy.
If the room temperature change (the difference change between the current operation environment temperature and the set operation temperature) in the second mode exceeds the set temperature difference, the second mode is stopped, the first mode is entered, and the operation capacity of the air conditioner is determined again.
In a specific embodiment of the present invention, specifically, the method further includes:
the establishing module is used for establishing the system operation database in advance;
the step of establishing the system operation database specifically includes:
establishing a system simulation model or a neural network model;
acquiring environmental working condition parameters, an air conditioning mode and a set temperature of an air conditioner;
and training the system simulation model or the neural network model by using the environmental working condition parameters, the air-conditioning mode and the set temperature to obtain the system operation database.
Specifically, the method further comprises the following steps:
the calling module is used for calling a temperature sensing device and a humidity detection device which are arranged on an indoor unit and an outdoor unit of the air conditioner to acquire environmental working condition parameters; wherein the environmental condition parameters include: indoor dry bulb temperature, indoor humidity, outdoor dry bulb temperature, outdoor humidity parameters.
In the scheme of the invention, the system operation database is obtained by simulation calculation of a system simulation model or a neural network model.
Firstly, initial values such as environment condition parameters, air conditioner modes, room parameters and the like during the stable operation of the air conditioner need to be input into a system simulation model or a neural network model.
The environment working condition parameters comprise parameters such as indoor dry bulb temperature, indoor humidity, outdoor dry bulb temperature and outdoor humidity, and the parameters can be obtained by detecting temperature sensing bulbs on an indoor unit and an outdoor unit of an air conditioner, a humidity detection device and the like.
Secondly, in a possible implementation mode, the input and output results of the system simulation model are continuously trained and learned to form a neural network model, and the operation capacity Q 'and the operation power W' of the air conditioner at the moment can be rapidly predicted according to the input parameters (the operation frequency F of the compressor of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan). And a large number of input and output parameters are obtained through simulation calculation, and a system operation database of the air conditioner is established according to the input and output parameters.
In another possible embodiment, the system operation database may be understood as a neural network model itself, and the operation capacity Q 'and the operation power W' of the air conditioner are calculated in real time by directly using a neural network model algorithm instead of the air conditioner operation database.
In an embodiment of the present invention, the determining module 101 includes:
the third determining unit is used for acquiring the air outlet temperature Tout and the moisture content Dout of the air conditioner air outlet, the air inlet temperature Tin and the moisture content Din of the air conditioner air inlet and the rotating speed of the fan;
respectively determining the air volume AF of the air conditioner internal unit and the operation capacity Q according to the air outlet temperature Tout, the moisture content Dout, the air inlet temperature Tin, the moisture content Din and the rotating speed of a fan; wherein,
AF＝a·e(b·N+c)·(d·N3+f·N2+ g.n + h) · (i.dout + k); (a, b, c, d, f, g, h, i, k are fitting constants);
Q＝k·ln(l·Tin2+ m.tin + n). AF (Hin-Hout); wherein Tin is the temperature of the inlet air, k, l, m and n are fitting coefficients, and Hin and Hout are calculated according to the inlet and outlet air temperatures Tin and Tout and the inlet and outlet air moisture contents Din and Dout.
The air inlet temperature Tin can be detected by a temperature sensing bulb of the air inlet, the air outlet temperature Tout can be detected by a temperature sensor arranged at the air outlet, Din and Dout can be detected by humidity sensors arranged at the air inlet and the air outlet, and the actual output capacity Q of the current air conditioner in operation can be calculated in real time according to the relation between the air volume AF of the air conditioner internal unit and the rotating speed N.
In another embodiment of the present invention, specifically, the determining module 101 includes:
the fourth determining unit is used for acquiring the operating frequency F of the air conditioner, the opening degree P of the electronic expansion valve and the rotating speed N of the fan;
and inquiring the system operation database according to the operation frequency F, the opening P and the rotating speed N to determine the current operation capacity of the air conditioner.
And after a system operation database is established, the system operation database comprises the corresponding relation between the operation frequency F of the air conditioner, the opening P of the electronic expansion valve, the rotating speed N of the fan and the operation capacity of the air conditioner. Therefore, after the operation frequency F of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan are known, the operation capacity of the air conditioner can be directly determined from a system operation database.
In a third aspect, the present invention provides an air conditioner. The air conditioner is used for executing the steps of the operation control method of the air conditioner.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware that is instructed to implement by a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
While the technical solutions of the present invention have been described in detail, those skilled in the art will recognize that the concepts of the embodiments of the present invention can be modified in the specific embodiments and applications, and therefore, the disclosure of the present invention should not be construed as limiting the invention.
Claims (10)
1. An operation control method of an air conditioner, comprising:
determining the current operation capacity of the air conditioner;
inquiring a system operation database according to the operation capacity to obtain operation parameters of each actuator of the air conditioner;
and controlling the operation of each actuator of the air conditioner according to the operation parameters.
2. The operation control method of an air conditioner according to claim 1, further comprising:
acquiring the running time of an air conditioner;
judging whether the running time reaches a preset time threshold value or not;
if not, determining the operation capacity of the air conditioner according to the first mode of the air conditioner;
and if so, determining the operation capacity of the air conditioner according to the second mode of the air conditioner.
3. The method according to claim 2, wherein the step of determining the operation capability of the air conditioner according to the first mode of the air conditioner specifically includes:
acquiring the ambient temperature of an indoor unit of an air conditioner and the set temperature of a user;
and determining the operation capacity of the air conditioner according to the environment temperature and the set temperature.
4. The method according to claim 2, wherein the step of determining the operation capability of the air conditioner according to the second mode of the air conditioner specifically includes:
acquiring the ambient temperature of an indoor unit of an air conditioner and the set temperature of a user;
judging whether the temperature difference between the environment temperature and the set temperature is smaller than a preset temperature threshold value or not;
and if so, determining the operation capacity of the air conditioner according to the environmental load value corresponding to the set temperature.
5. The method for controlling the operation of the air conditioner according to claim 1, wherein the step of querying a system operation database according to the operation capability to obtain the operation parameters of each actuator of the air conditioner specifically includes:
inquiring the system operation database according to the operation capacity, and determining the operation scheme with the minimum operation power corresponding to the current operation capacity;
and acquiring the operation parameters of each actuator of the air conditioner corresponding to the operation scheme with the minimum operation power.
6. The operation control method of an air conditioner according to claim 1, wherein the step of determining the current operation capability of the air conditioner includes:
acquiring the operating frequency F of the air conditioner, the opening P of the electronic expansion valve and the rotating speed N of the fan;
and inquiring the system operation database according to the operation frequency F, the opening P and the rotating speed N to determine the current operation capacity of the air conditioner.
7. The operation control method of an air conditioner according to claim 1, wherein the operation parameters include an operation frequency F of an air conditioner compressor, an opening degree P of an electronic expansion valve, and a rotation speed N of a fan.
8. The operation control method of the air conditioner according to claim 7, wherein the step of controlling the operation of each actuator of the air conditioner according to the operation parameter specifically includes:
controlling the operation frequency of the air-conditioning compressor according to the operation frequency F;
controlling the opening degree of the electronic expansion valve according to the opening degree P;
and controlling the rotating speed of the fan according to the rotating speed N.
9. An operation control system of an air conditioner, comprising:
the determining module is used for determining the current operation capacity of the air conditioner;
the query module is used for querying a system operation database according to the operation capacity to obtain the operation parameters of each actuator of the air conditioner;
and the control module is used for controlling the operation of each actuator of the air conditioner according to the operation parameters.
10. An air conditioner characterized by being configured to execute the steps of the operation control method of the air conditioner according to any one of claims 1 to 8.
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| CN114076381A (en) * | 2020-08-21 | 2022-02-22 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN114076381B (en) * | 2020-08-21 | 2022-12-20 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN114517960A (en) * | 2020-11-19 | 2022-05-20 | 珠海格力电器股份有限公司 | Air conditioner control method and device, electronic equipment and storage medium |
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